Lm Wind Power A/s

Blade Dynamics Limited

Ge Wind Energy, LLC

Guannan Wang

Andreas Herrig

Jeremy Hurault

Benoit Petitjean

Trevor Howard Wood

Dongke Sun

A wind turbine blade () comprising a pressure side () and a suction side (), a leading edge () and a trailing edge (). At least a portion of the blade () located in a trailing edge region () at or adjacent to the trailing edge () is a noise reducing portion defining an exposed surface and comprising a plurality of sound reducing or sound absorbing acoustic resonators (), each of the resonators () comprising an opening () in the exposed surface and a cavity () having a length L between the opening () and a bottom () of the cavity opposite the opening ().

Noise reducing wind turbine blade

A trailing edge panel is configured to be attached to a trailing edge of a wind turbine blade and includes a base element and a number of protruding aerodynamic elements. The base element has an attachment part configured to be attached to and extend from the trailing edge of the wind turbine blade and to an upstream position on a first blade side of the wind turbine blade. The base element further has a serrated part extending from the second side of the attachment part and configured to project out from the trailing edge of the wind turbine blade, wherein the serrated part comprises a number of serrations, including a first serration and a second serration. The number of protruding aerodynamic elements, including a first protruding aerodynamic element, includes a first protruding part attached to the serrated part of the base element.

Wind turbine serrations with upstream extension

Growing community of inventors

Salzbergen, Germany

Guannan Wang